CODEWITHSUNDEEP
jqueryasp.net-mvcviewbag
Bercovici Adrian
Bercovici Adrian

Reputation: 9380

How to parse objects from ViewBag to JavaScript?

I am trying to parse an object from ViewBag to Javascript without luck. I have tried so far with jQuery/razor/mixed syntax...to no avail. When I tried with Json.Encode(), I get an "error not defined".

Class

class Story 
{
    public long Id {get;set;}
    public string Description{get;set;}
}

Controller

[HttpGet]
public IActionResult Index(Story _story) 
{
    List<Location> Locations = this.context.Locations.ToList();
    ViewBag.story = _story;
    return View(context.Locations);
}

View

$(document).ready(function() {
        var story = JSON.parse("@ViewBag.story");
        var story2try = '@(ViewBag.story)';

        console.log(@ViewBag.story.Id);
        console.log(story);
        console.log(story2try);
});

The thing is the first log gets printed so for primitive data types such as strings/int/long it works but not for objects. I get this error afterwards:

Unexpected token A in JSON at position 0 SyntaxError: Unexpected token A in JSON at position 0

Upvotes: 0

Views: 4094

Answers (2)

Bercovici Adrian
Bercovici Adrian

Reputation: 9380

So after countless tries i managed to solve the problem :

1.Serialize my object in the controller as others pointed out using the Newtonsoft.Json library:

ViewBag._story =JsonConvert.SerializeObject(_story);

2.In the view i would deserialize it using:

var _story=@(Html.Raw(ViewBag._story));

Thank you for your help !

Upvotes: 2

Mikhail
Mikhail

Reputation: 9300

It is necessary to serialize the model object first (like it is suggested in comments) plus get its raw content (check the ASP.NET MVC using ViewData in javascript thread), for example:

ViewBag.story = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(_story);

$(function () {
    var story = @Html.Raw(ViewBag.story);
    alert(story.Id);
});

Upvotes: 2

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